Fix bug where background color changes were covered by the scrollview's default color (black).
Fix bug where background color changes were covered by the scrollview's default color (black).

Added a semi-transparent gray tint to the non-active page control dots so they show up on a white background.

Limit image panning to bounds in the previous commit is good to go as is.

Inspirato/SwiftPhotoGallery,Inspirato/SwiftPhotoGallery